Effect of gamma irradiation on physico-mechanical properties of spice packaging films |
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| Affiliation: | 1. Leibniz-Institut für Oberflächenmodifizierung e.V., Permoserstr. 15, 04318 Leipzig, Germany;2. Solarion AG, Pereser Höhe 1, Breitscheidstraße 45, 04442 Zwenkau, Germany;3. Fraunhofer-Einrichtung für Polymermaterialien und Composite PYCO, Kantstraße 55, 14513 Teltow, Germany;4. AZ Electronic Materials (Germany) GmbH, Rheingaustraße 190-196, 65203 Wiesbaden, Germany |
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| Abstract: | Physico-mechanical properties of two types of laminated films, commercially used for spice packaging, are investigated after gamma irradiation at 8, 10 and 15 kGy. Data showed that polyethylene terephthalate/polyethylene terephthalate/linear low density polyethylene (PET/PET/LLDPE) was more resistant to radiation compared to biaxially oriented polypropylene/cast polypropylene (BOPP/CPP) and its barrier properties slightly improved up to 15 kGy. Oxygen transmission rate of BOPP/CPP was increased by 25%, and the melting peak temperature was decreased by 3.9% at 15 kGy, which may lead to oxidation of packaged spices and loss of their aroma/flavour, respectively. |
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